Extracting contour lines from a hierarchical surface model

De Floriani, LeilaMirra, DanielaPuppo, Enrico2014-10-212014-10-2119931467-8659https://doi.org/10.1111/1467-8659.1230249The Hierarchical Triangulated Irregular Network (HTIN) is a structure for representing 2?-dimensional surfaces at different levels of detail through piecewise-linear approximations based on triangulations of the surface domain. In this paper, we present two algorithms that allow extracting a representation of the surface and contour lines at a given level of detail, directly from the HTIN.Extracting contour lines from a hierarchical surface model10.1111/1467-8659.1230249249-260